Abstract
We report experimentally observed extreme blue-enhanced supercontinuum (SC)
generation down to 372 nm wavelength in simply designed and easily fabricated nonlinear
microstructured optical fibers (MOFs). Three different MOFs of various core sizes and
dispersion profiles are fabricated in order to optimize the parameters for achieving
deeper blue components by group-index matching. The physical mechanism involved in the
generation of extreme blue component is explained along with other nonlinear processes
participating in the spectral broadening. We also explore the extent of applicability of
the group-index matching technique for obtaining blue-enhanced SC and finally optimize
the location of the zero dispersion wavelength (ZDW) with respect to the pump wavelength
to achieve the maximum blue shift.
© 2011 IEEE
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